net/8021q/vlan.h

   1 #ifndef __BEN_VLAN_802_1Q_INC__
   2 #define __BEN_VLAN_802_1Q_INC__
   3
   4 #include <linux/if_vlan.h>
   5 #include <linux/u64_stats_sync.h>
   6
   7
   8 /**
   9  *      struct vlan_priority_tci_mapping - vlan egress priority mappings
  10  *      @priority: skb priority
  11  *      @vlan_qos: vlan priority: (skb->priority << 13) & 0xE000
  12  *      @next: pointer to next struct
  13  */
  14 struct vlan_priority_tci_mapping {
  15         u32                                     priority;
  16         u16                                     vlan_qos;
  17         struct vlan_priority_tci_mapping        *next;
  18 };
  19
  20
  21 /**
  22  *      struct vlan_pcpu_stats - VLAN percpu rx/tx stats
  23  *      @rx_packets: number of received packets
  24  *      @rx_bytes: number of received bytes
  25  *      @rx_multicast: number of received multicast packets
  26  *      @tx_packets: number of transmitted packets
  27  *      @tx_bytes: number of transmitted bytes
  28  *      @syncp: synchronization point for 64bit counters
  29  *      @rx_errors: number of rx errors
  30  *      @tx_dropped: number of tx drops
  31  */
  32 struct vlan_pcpu_stats {
  33         u64                     rx_packets;
  34         u64                     rx_bytes;
  35         u64                     rx_multicast;
  36         u64                     tx_packets;
  37         u64                     tx_bytes;
  38         struct u64_stats_sync   syncp;
  39         u32                     rx_errors;
  40         u32                     tx_dropped;
  41 };
  42
  43 /**
  44  *      struct vlan_dev_info - VLAN private device data
  45  *      @nr_ingress_mappings: number of ingress priority mappings
  46  *      @ingress_priority_map: ingress priority mappings
  47  *      @nr_egress_mappings: number of egress priority mappings
  48  *      @egress_priority_map: hash of egress priority mappings
  49  *      @vlan_id: VLAN identifier
  50  *      @flags: device flags
  51  *      @real_dev: underlying netdevice
  52  *      @real_dev_addr: address of underlying netdevice
  53  *      @dent: proc dir entry
  54  *      @vlan_pcpu_stats: ptr to percpu rx stats
  55  */
  56 struct vlan_dev_info {
  57         unsigned int                            nr_ingress_mappings;
  58         u32                                     ingress_priority_map[8];
  59         unsigned int                            nr_egress_mappings;
  60         struct vlan_priority_tci_mapping        *egress_priority_map[16];
  61
  62         u16                                     vlan_id;
  63         u16                                     flags;
  64
  65         struct net_device                       *real_dev;
  66         unsigned char                           real_dev_addr[ETH_ALEN];
  67
  68         struct proc_dir_entry                   *dent;
  69         struct vlan_pcpu_stats __percpu         *vlan_pcpu_stats;
  70 };
  71
  72 static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
  73 {
  74         return netdev_priv(dev);
  75 }
  76
  77 /* Must be invoked with rcu_read_lock or with RTNL. */
  78 static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
  79                                                u16 vlan_id)
  80 {
  81         struct vlan_group *grp = rcu_dereference_rtnl(real_dev->vlgrp);
  82
  83         if (grp)
  84                 return vlan_group_get_device(grp, vlan_id);
  85
  86         return NULL;
  87 }
  88
  89 /* found in vlan_dev.c */
  90 void vlan_dev_set_ingress_priority(const struct net_device *dev,
  91                                    u32 skb_prio, u16 vlan_prio);
  92 int vlan_dev_set_egress_priority(const struct net_device *dev,
  93                                  u32 skb_prio, u16 vlan_prio);
  94 int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask);
  95 void vlan_dev_get_realdev_name(const struct net_device *dev, char *result);
  96
  97 int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id);
  98 void vlan_setup(struct net_device *dev);
  99 int register_vlan_dev(struct net_device *dev);
 100 void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
 101
 102 static inline u32 vlan_get_ingress_priority(struct net_device *dev,
 103                                             u16 vlan_tci)
 104 {
 105         struct vlan_dev_info *vip = vlan_dev_info(dev);
 106
 107         return vip->ingress_priority_map[(vlan_tci >> VLAN_PRIO_SHIFT) & 0x7];
 108 }
 109
 110 #ifdef CONFIG_VLAN_8021Q_GVRP
 111 extern int vlan_gvrp_request_join(const struct net_device *dev);
 112 extern void vlan_gvrp_request_leave(const struct net_device *dev);
 113 extern int vlan_gvrp_init_applicant(struct net_device *dev);
 114 extern void vlan_gvrp_uninit_applicant(struct net_device *dev);
 115 extern int vlan_gvrp_init(void);
 116 extern void vlan_gvrp_uninit(void);
 117 #else
 118 static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
 119 static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
 120 static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
 121 static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
 122 static inline int vlan_gvrp_init(void) { return 0; }
 123 static inline void vlan_gvrp_uninit(void) {}
 124 #endif
 125
 126 extern const char vlan_fullname[];
 127 extern const char vlan_version[];
 128 extern int vlan_netlink_init(void);
 129 extern void vlan_netlink_fini(void);
 130
 131 extern struct rtnl_link_ops vlan_link_ops;
 132
 133 extern int vlan_net_id;
 134
 135 struct proc_dir_entry;
 136
 137 struct vlan_net {
 138         /* /proc/net/vlan */
 139         struct proc_dir_entry *proc_vlan_dir;
 140         /* /proc/net/vlan/config */
 141         struct proc_dir_entry *proc_vlan_conf;
 142         /* Determines interface naming scheme. */
 143         unsigned short name_type;
 144 };
 145
 146 #endif /* !(__BEN_VLAN_802_1Q_INC__) */